Research Abstracts

New spiral wound element improvements have been made so that RO/NF products are more robust. One improvement is the design of vents in the seal carrier or ATD’s on the ends of the elements. This feature has proven to quickly equalize the pressure on the inside of and outside of the element and preve

The nanofiltration (NF) membranes and their properties are quite diverse, but can generally be described as having rejection characteristics that range from “loose” RO to “tight” ultrafiltration. The uniqueness of these membranes is highlighted by their ability to selectively reject different dissol

Contractors and end users involved in desalination business are already asking for high efficiency pumps. In Sulzer we think that it is important for them to know how they can ask for the most efficient pump by means of learning about main basic principles (specific speed, suction specific speed and

Most large seawater reverse osmosis (SWRO) desalination plants built before 2002 incorporated turbine-type energy recovery devices (ERDs) that were connected with a shaft to the high pressure pump. Both the pump and the ERD had best efficiency points corresponding to specific flow rates and pressure

The Larnaca SWRO desalination plant has successfully operated for more than 6 years. It was one of the first major SWRO plants to have a tight boron specification. With some management of the membrane elements at the site, the plant has consistently met the water quality and quantity requirements of

Larnaca desalination plant is currently within the 10 largest SWRO plants in Europe. It has an installed capacity of 54,000 m3/d with product water conforming to WHO and EU drinking standards with innovative features such as 8 elements per pressure vessel and fully automated plant operation control.

A number of seawater desalination technologies have been developed during the last several decades to augment the supply of water in arid regions of the world. Due to the constraints of high desalination costs, many countries are unable to afford these technologies as a fresh water resource. However

This paper presents the technical characteristics as well as an economic comparison of two autonomous desalination systems. The first system concerns the laboratory experimental results of a direct coupled PV-SWRO desalination system without batteries equipped with a hydraulic energy recovery device

Photovoltaic powered brackish water reverse osmosis (PV-BWRO) desalination systems have been proved to be a technically and economically mature choice for water supply in isolated communities and islands suffering from lack or poor water quality. However, photovoltaic seawater reverse osmosis (PV-SW

Di-p-anisyltelluritrichloride-MM (CH3OPhTeCl3-MM), bi-phenyltelluride-MM (Ph2Te-MM) octadecytrimethylammonium-MM (ODTMA-MM), tetrabutylammonium-MM (TBA-clay), and cetylpyridium-MM (CP-MM) were prepared and characterized to be used for further investigations as adsorbents of organic contaminants incl